Short communicationInfluence of nickel incorporation on the structure and catalytic behavior of Cu-catalyst for heterogeneous catalytic wet peroxide oxidation of quinoline under microwave irradiation

•The nickel incorporation to Cu-catalyst promoted the formation of CuO.•The nickel incorporation could promote Cu-catalyst stability and catalytic performance.•MW-assisted CWPO process could be utilized to treat wastewater with excellent performance.

The influence of nickel incorporation on the structure and catalytic behavior of Cu-catalyst for catalytic wet peroxide oxidation of quinoline under microwave irradiation was investigated. The Cu-catalyst and Cu/Ni-catalyst were prepared by wet impregnation method and characterized using XRD, BET, SEM-EDX, ICP-AES, XPS techniques and the test results display that after the Ni incorporation, Cu can present better dispersion and smaller size and the amount of chemisorbed oxygen of the catalyst surface can be improved. After the Ni incorporation, the catalytic behavior of Cu/Ni-catalyst could be enhanced by about 20%. Leaching tests indicate that the Ni incorporation also could be enhanced the stability of Cu-catalyst.

Graphical abstractDownload high-res image (133KB)Download full-size image